DE69703503T2 - Optische Platte mit oszillierenden Stegen und Rillen - Google Patents

Optische Platte mit oszillierenden Stegen und Rillen

Info

Publication number
DE69703503T2
DE69703503T2 DE69703503T DE69703503T DE69703503T2 DE 69703503 T2 DE69703503 T2 DE 69703503T2 DE 69703503 T DE69703503 T DE 69703503T DE 69703503 T DE69703503 T DE 69703503T DE 69703503 T2 DE69703503 T2 DE 69703503T2
Authority
DE
Germany
Prior art keywords
grooves
optical disc
oscillating bars
oscillating
bars
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE69703503T
Other languages
English (en)
Other versions
DE69703503D1 (de
Inventor
Takashi Ishida
Shin-Ichi Tanaka
Akira Mutoh
Yoshinari Takemura
Shunji Ohara
Isao Satoh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of DE69703503D1 publication Critical patent/DE69703503D1/de
Publication of DE69703503T2 publication Critical patent/DE69703503T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0938Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following servo format, e.g. guide tracks, pilot signals
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/30Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
    • G11B27/3027Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/007Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/007Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/00718Groove and land recording, i.e. user data recorded both in the grooves and on the lands
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/007Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/00745Sectoring or header formats within a track
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24073Tracks
    • G11B7/24082Meandering
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00Record carriers by type
    • G11B2220/20Disc-shaped record carriers
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00Record carriers by type
    • G11B2220/20Disc-shaped record carriers
    • G11B2220/21Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/211Discs having both read-only and rewritable or recordable areas containing application data; Partial ROM media
DE69703503T 1996-10-25 1997-10-24 Optische Platte mit oszillierenden Stegen und Rillen Expired - Lifetime DE69703503T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP28362296 1996-10-25
JP31593996 1996-11-27

Publications (2)

Publication Number Publication Date
DE69703503D1 DE69703503D1 (de) 2000-12-14
DE69703503T2 true DE69703503T2 (de) 2001-03-15

Family

ID=26555116

Family Applications (4)

Application Number Title Priority Date Filing Date
DE69703504T Expired - Lifetime DE69703504T2 (de) 1996-10-25 1997-10-24 Optische Platte mit ozillierenden Stegen und Rillen
DE69703503T Expired - Lifetime DE69703503T2 (de) 1996-10-25 1997-10-24 Optische Platte mit oszillierenden Stegen und Rillen
DE69703120T Expired - Lifetime DE69703120T2 (de) 1996-10-25 1997-10-24 Optische platte mit oszillierenden stegen und rillen
DE69703751T Expired - Lifetime DE69703751T2 (de) 1996-10-25 1997-10-24 Optische Platte mit oszillierenden Stegen und Rillen

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE69703504T Expired - Lifetime DE69703504T2 (de) 1996-10-25 1997-10-24 Optische Platte mit ozillierenden Stegen und Rillen

Family Applications After (2)

Application Number Title Priority Date Filing Date
DE69703120T Expired - Lifetime DE69703120T2 (de) 1996-10-25 1997-10-24 Optische platte mit oszillierenden stegen und rillen
DE69703751T Expired - Lifetime DE69703751T2 (de) 1996-10-25 1997-10-24 Optische Platte mit oszillierenden Stegen und Rillen

Country Status (11)

Country Link
US (3) US6137768A (de)
EP (4) EP0934588B1 (de)
KR (1) KR100494963B1 (de)
CN (2) CN1136554C (de)
DE (4) DE69703504T2 (de)
HK (1) HK1029430A1 (de)
ID (1) ID21722A (de)
IN (1) IN192585B (de)
MY (1) MY116162A (de)
TW (1) TW464852B (de)
WO (1) WO1998019302A1 (de)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2856390B2 (ja) * 1996-07-26 1999-02-10 株式会社日立製作所 情報記録媒体及びそれを用いた記録再生方法
JPH10320841A (ja) * 1997-05-16 1998-12-04 Seiko Epson Corp 光ディスク原盤加工方法及び、マスタリング装置
US7123555B2 (en) * 1997-08-16 2006-10-17 Lg Electronics Inc. Information recording medium
US6914856B2 (en) * 1998-08-14 2005-07-05 Lg Electronics Inc. Information recording medium
EP0926664B1 (de) * 1997-12-26 2006-05-31 Kabushiki Kaisha Toshiba Optische Platte und optisches Plattengerät
KR100300998B1 (ko) * 1998-04-17 2001-09-06 윤종용 랜드/그루브 절환 신호 발생방법 및 장치
US6657929B1 (en) * 1998-06-23 2003-12-02 Matsushita Electric Industrial Co., Ltd. Optical disk recording apparatus and method for recording data on optical disk
JP2002522861A (ja) * 1998-08-04 2002-07-23 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 光ディスク及び該ディスクを走査する装置
KR100800416B1 (ko) * 2000-06-20 2008-02-04 엘지전자 주식회사 산/골 기록방식 광디스크 및 그 기록/재생 장치
JP2000099952A (ja) * 1998-09-17 2000-04-07 Nec Corp 光ディスク及び光ディスク装置
US6847594B1 (en) * 2000-02-07 2005-01-25 Samsung Electronics Co., Ltd. Recording medium having wobbled groove tracks out of phase with wobbled land tracks, servo controlling apparatus using wobble signal and method thereof
JP3783909B2 (ja) * 1999-05-20 2006-06-07 パイオニア株式会社 カッティング装置、情報記録媒体、情報記録装置及び情報記録方法並びに、カッティング方法
JP3850600B2 (ja) * 1999-10-15 2006-11-29 パイオニア株式会社 情報記録ディスクおよび情報記録装置
JP2001148123A (ja) * 1999-11-22 2001-05-29 Sony Corp 光ディスク、記録及び/又は再生装置及び方法
DE60131037T2 (de) * 2000-03-29 2008-02-14 Matsushita Electric Industrial Co., Ltd., Kadoma Optische Platte und Aufzeichnungsvorrichtung und Lesevorrichtung für eine derartige optische Platte
JP2002032922A (ja) * 2000-05-12 2002-01-31 Sony Corp 光ディスク及び光ディスク装置
CN1193355C (zh) * 2000-05-17 2005-03-16 日本胜利株式会社 信息记录媒体及其记录方法
JP2002056541A (ja) * 2000-07-25 2002-02-22 Samsung Electronics Co Ltd 光ディスク
KR100798201B1 (ko) * 2000-09-01 2008-01-24 마츠시타 덴끼 산교 가부시키가이샤 광디스크 매체, 광디스크 재생 장치, 재생 방법 및 기록 방법
TW577068B (en) * 2000-10-10 2004-02-21 Hitachi Ltd Optical disk
CN101430889A (zh) * 2000-10-10 2009-05-13 松下电器产业株式会社 光盘
KR100719129B1 (ko) * 2001-02-06 2007-05-17 삼성전자주식회사 디스크 플레이어
JP4534387B2 (ja) * 2001-03-19 2010-09-01 ソニー株式会社 記録装置および方法、再生装置および方法、記録媒体、プログラム、並びにディスク媒体
JP4300727B2 (ja) 2001-10-09 2009-07-22 ソニー株式会社 ディスク記録媒体、ディスクドライブ装置、再生方法、ディスク製造方法
JP4101666B2 (ja) 2002-01-22 2008-06-18 松下電器産業株式会社 情報記録媒体、記録装置、再生装置、記録方法、再生方法
US6704376B2 (en) * 2002-01-23 2004-03-09 Bae Systems Information And Electronic Systems Integration Inc. Power and confidence ordered low complexity soft turbomud with voting system
US7443886B1 (en) * 2002-04-30 2008-10-28 Schneider Automation Inc. Communication protocol system and method
TWI239512B (en) * 2002-07-24 2005-09-11 Mediatek Inc ADIP demodulation method and apparatus
JP2004056713A (ja) * 2002-07-24 2004-02-19 Sharp Corp 撮影部を有した携帯機器および露出調整装置
DK1597727T3 (da) * 2003-02-20 2012-04-16 Koninkl Philips Electronics Nv Informationsbærer omfattende adgangsinformation
US20070025233A1 (en) * 2003-05-16 2007-02-01 Blum Martinus W Information carrier having wobble pre-groove
US7218690B2 (en) * 2003-07-24 2007-05-15 Bae Systems Information And Electronic Systems Integration Inc. Hybrid turbo-mud for multiple access systems
CN101405795B (zh) * 2006-03-13 2011-05-11 松下电器产业株式会社 访问记录介质的装置
US7593492B1 (en) 2006-09-15 2009-09-22 Bae Systems Information And Electronic Systems Integration Inc. Combinational hybrid turbo-MUD

Family Cites Families (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8800151A (nl) 1988-01-22 1989-08-16 Philips Nv Werkwijze en inrichting voor het optekenen van een informatiesignaal.
JPH02103752A (ja) * 1988-10-12 1990-04-16 Hitachi Ltd 光ディスク及びその製造方法
US5204852A (en) * 1990-02-17 1993-04-20 Victor Company Of Japan, Ltd. Optical disc-like recoding medium and manufacturing method thereof
JPH04243019A (ja) * 1991-01-17 1992-08-31 Fuji Photo Film Co Ltd 情報記録媒体
JPH0536087A (ja) * 1991-07-27 1993-02-12 Ricoh Co Ltd 光情報記録媒体
KR950010418B1 (ko) * 1991-08-28 1995-09-16 미쯔비시덴끼 가부시끼가이샤 광기록재생장치
US5377178A (en) * 1991-10-11 1994-12-27 Hitachi, Ltd. Data recording/reproducing method and apparatus using a recording medium having clock marks recorded in a wobbled track for read/write synchronization
DE69233335T2 (de) * 1991-12-02 2005-02-10 Koninklijke Philips Electronics N.V. Geschlossenes Informationssystem mit Kopierschutz
JP3042559B2 (ja) * 1992-01-14 2000-05-15 ソニー株式会社 ディスク記録再生方法
JPH05266491A (ja) * 1992-03-23 1993-10-15 Brother Ind Ltd 光記録媒体
JP3221100B2 (ja) * 1992-10-30 2001-10-22 ソニー株式会社 光ディスク
JP2860229B2 (ja) * 1993-06-25 1999-02-24 株式会社ケンウッド 光ディスク記録再生装置
JP3145235B2 (ja) * 1993-09-03 2001-03-12 パイオニア株式会社 記録可能ディスク及びその記録装置、記録方法
DE4341223B4 (de) * 1993-12-03 2010-11-18 Deutsche Thomson-Brandt Gmbh ROM-RAM-Disk
JP3051016B2 (ja) 1994-01-20 2000-06-12 松下電器産業株式会社 光ディスク媒体およびそのクロック生成装置
TW325185U (en) * 1994-03-22 1998-01-11 Mitsubish Chem Corp Optical disk
JP3069722B2 (ja) * 1994-06-13 2000-07-24 松下電器産業株式会社 光ディスク記録方法、光ディスク記録装置及び光ディスク
JPH0822640A (ja) * 1994-07-05 1996-01-23 Matsushita Electric Ind Co Ltd 光ディスクおよび光ディスク記録方法
US5602824A (en) * 1994-08-12 1997-02-11 Nikon Corporation Optical disk capable of recording information on both land and groove tracks
US5663946A (en) * 1994-08-31 1997-09-02 Sony Corporation Optical disc having buffering areas capable of storing a pattern for obtaining tracking error signals and recording and/or reproducing apparatus therefor
JP2590751B2 (ja) * 1994-09-21 1997-03-12 日本電気株式会社 光ディスク媒体およびこれを用いた記録再生方法
US5537178A (en) * 1995-02-07 1996-07-16 Aofa-Gevaert N.V. Apparatus for the processing of photographic sheet material
JP2788022B2 (ja) * 1995-02-14 1998-08-20 株式会社日立製作所 光記録媒体
US5982738A (en) * 1995-02-14 1999-11-09 Hitachi, Ltd. Optical recording medium having at least wobbled synchronous information shared between tracks
WO1996025736A1 (fr) 1995-02-17 1996-08-22 Matsushita Electric Industrial Co., Ltd. Disque optique et dispositif d'enregistrement/de reproduction sur disque optique
US5872767A (en) * 1995-02-17 1999-02-16 Matsushita Electric Industrial Co., Ltd. Optical disk and an optical disk recording/reproduction device having address blocks located on boundary lines between adjoining tracks
US5896365A (en) * 1995-04-28 1999-04-20 Canon Kabushiki Kaisha Optical information recording medium capable of recording in lands and grooves without a track-jumping operation; optical information recording/reproducing apparatus using, and master disk exposure apparatus for producing the same
JPH08329507A (ja) * 1995-05-30 1996-12-13 Sharp Corp トラッキング補正方法及びその装置並びに光ディスク
US5835478A (en) * 1995-06-15 1998-11-10 Sony Corporation Optical disc having address information for recording and reproducing data at correct positions
JP3652017B2 (ja) * 1995-08-23 2005-05-25 三井化学株式会社 光記録媒体
US5835479A (en) * 1995-10-09 1998-11-10 Matsushita Electric Industrial Co., Ltd. Optical information recording medium
JP3662056B2 (ja) * 1995-11-16 2005-06-22 三井化学株式会社 光記録媒体
JP3063596B2 (ja) * 1995-11-24 2000-07-12 三菱電機株式会社 光ディスク装置および光ディスク
JP3063598B2 (ja) * 1995-12-01 2000-07-12 三菱電機株式会社 光ディスクおよび光ディスク装置
JP3642863B2 (ja) * 1996-02-02 2005-04-27 ソニー株式会社 ディスク、ディスク形成装置、およびディスク形成方法
JP3850060B2 (ja) * 1996-02-13 2006-11-29 三菱電機株式会社 光ディスク及び光ディスク装置
JP3063613B2 (ja) * 1996-03-25 2000-07-12 三菱電機株式会社 光ディスク媒体及び光ディスク装置
JPH09259576A (ja) * 1996-03-25 1997-10-03 Toshiba Corp 複数管理領域を持つ情報記録ディスク
JPH09259440A (ja) * 1996-03-25 1997-10-03 Sony Corp 記録媒体、アドレス記録方法および装置、並びに、記録再生方法および装置
JP3703569B2 (ja) * 1996-04-02 2005-10-05 ソニー株式会社 光記録媒体及びその記録再生方法、記録再生装置
JP2856390B2 (ja) 1996-07-26 1999-02-10 株式会社日立製作所 情報記録媒体及びそれを用いた記録再生方法
US5809006A (en) * 1996-05-31 1998-09-15 Cagent Technologies, Inc. Optical disk with copy protection, and apparatus and method for recording and reproducing same
EP1276101B1 (de) * 1996-06-14 2004-10-27 Mitsubishi Chemical Corporation Optische Phasenänderungsscheibe
JPH1011760A (ja) * 1996-06-24 1998-01-16 Mitsubishi Electric Corp 光ディスクおよび光ディスクトラッキング方法
TW357345B (en) * 1996-06-26 1999-05-01 Matsushita Electric Ind Co Ltd CD having re-write area and ROM area
JP3103505B2 (ja) * 1996-06-26 2000-10-30 三菱電機株式会社 光ディスク及び光ディスク駆動装置
JP3418065B2 (ja) * 1996-06-26 2003-06-16 三菱電機株式会社 光ディスク
US5959962A (en) * 1996-09-30 1999-09-28 Kabushiki Kaisha Toshiba Optical disk having a format condition information drive
US6069870A (en) * 1996-10-22 2000-05-30 Hitachi, Ltd. Information recording medium which indicates information according to the wobbling of a track and information recording and reproducing apparatus

Also Published As

Publication number Publication date
DE69703751T2 (de) 2001-04-19
US6373815B1 (en) 2002-04-16
EP0973157A2 (de) 2000-01-19
DE69703120T2 (de) 2001-01-11
CN1234131A (zh) 1999-11-03
KR20000052809A (ko) 2000-08-25
EP0973158B1 (de) 2000-11-08
CN1136554C (zh) 2004-01-28
EP0934588B1 (de) 2000-09-13
MY116162A (en) 2003-11-28
CN1174386C (zh) 2004-11-03
ID21722A (id) 1999-07-15
DE69703504T2 (de) 2001-03-15
EP0973156A3 (de) 2000-02-02
IN192585B (de) 2004-05-08
DE69703503D1 (de) 2000-12-14
EP0973156A2 (de) 2000-01-19
US6137768A (en) 2000-10-24
CN1258906A (zh) 2000-07-05
TW464852B (en) 2001-11-21
EP0973157A3 (de) 2000-02-02
DE69703120D1 (de) 2000-10-19
DE69703504D1 (de) 2000-12-14
KR100494963B1 (ko) 2005-06-14
US6167022A (en) 2000-12-26
EP0973158A2 (de) 2000-01-19
WO1998019302A1 (en) 1998-05-07
HK1029430A1 (en) 2001-03-30
DE69703751D1 (de) 2001-01-25
EP0973158A3 (de) 2000-02-02
EP0934588A1 (de) 1999-08-11
EP0973156B1 (de) 2000-12-20
EP0973157B1 (de) 2000-11-08

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